From 7c2bb2a237eb25eb13f4aefbdc03a53ca2031236 Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Fri, 21 Jun 2019 19:34:45 -0400
Subject: [PATCH] grpc-js: don't overwrite existing error codes

This commit causes RPC handlers to default to INTERNAL when
an error occurs, but does not overwrite an existing error
code.
---
 packages/grpc-js/src/server.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/grpc-js/src/server.ts b/packages/grpc-js/src/server.ts
index 0d92881b..e6d17619 100644
--- a/packages/grpc-js/src/server.ts
+++ b/packages/grpc-js/src/server.ts
@@ -374,7 +374,11 @@ export class Server {
           }
         } catch (err) {
           const call = new Http2ServerCallStream(stream, null!);
-          err.code = Status.INTERNAL;
+
+          if (err.code === undefined) {
+            err.code = Status.INTERNAL;
+          }
+
           call.sendError(err);
         }
       }